The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2020
Filed:
Jan. 15, 2015
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Jae-Won Choi, Yongin-si, KR;
Sang-In Park, Yongin-si, KR;
Jae-Hong Lim, Yongin-si, KR;
Yong-Chan You, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A positive active material, a method of preparing the positive active material, a positive electrode including the positive active material, and a lithium battery including the positive active material are disclosed. The positive active material includes a core and a coating layer on the core. The coating layer includes a sulfur component. When a binding energy peak of the sulfur is measured by X-ray photoelectron spectroscopy (XPS), the binding energy peak is observed at about 165 eV to about 168 eV, and the stability of the positive active material may be improved due to the coating layer. Accordingly, the lifespan properties of a lithium battery including the positive active material may be improved.